I have to say that when I demo'd these side by side the other week with the B&W 685's they were better IMO. Much better overall soundstage, betgter bass depth and control and a rerally smooth and detailed midrange/treble.

The Partingtons would be a future upgrade but initially my Atacama Nexus 6 stands wouold have to do.

Thanks for the suggestions so far.

Shortlist is now Arcaydis DM1, Rega RS1, MA RX1/2, Focal 706v, and B&W 685. I have a feeling the RX2s might be a little too large though. Any further ideas or thoughts, particularly in relation to goo synergy with the NAD kit, are very welcome

This won't happen straight away. I'm taking my time. Any future upgrades are going to be very measured and the result of long consideration. The fast-switching days are well and truly over.